Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

When compound T is put into dilute hydrochloric acid and heated gently, it releases a gas that decolourises acidified aqueous potassium manganate(VII), changing it from purple to colourless. A flame test on compound T gives a lilac flame. What is compound T?

  • Asodium sulfate
  • Bsodium sulfite
  • Cpotassium sulfate
  • Dpotassium sulfite

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